Nitrogen and phosphorus leaching losses from paddy fields with different water and nitrogen managements

2011 ◽  
Vol 9 (3) ◽  
pp. 333-342 ◽  
Author(s):  
Shi-Zhang Peng ◽  
Shi-Hong Yang ◽  
Jun-Zeng Xu ◽  
Yu-Feng Luo ◽  
Hui-Jing Hou
Keyword(s):  
Paddy Fields ◽  
Phosphorus Leaching ◽  
Nitrogen And Phosphorus ◽  
Leaching Losses

Nitrogen and phosphorus leaching losses from intensively managed paddy fields with straw retention

2014 ◽  
Vol 141 ◽  
pp. 66-73 ◽  
Author(s):  
Jun Wang ◽  
Dejian Wang ◽  
Gang Zhang ◽  
Yuan Wang ◽  
Can Wang ◽  
...  
Keyword(s):  
Paddy Fields ◽  
Phosphorus Leaching ◽  
Nitrogen And Phosphorus ◽  
Leaching Losses ◽  
Straw Retention ◽  
Intensively Managed

Nitrogen and phosphorus leaching losses from potatoes with different harvest times and following crops

2012 ◽  
Vol 133 ◽  
pp. 130-138 ◽  
Author(s):  
Angelika Neumann ◽  
Gunnar Torstensson ◽  
Helena Aronsson
Keyword(s):  
Phosphorus Leaching ◽  
Nitrogen And Phosphorus ◽  
Leaching Losses

scholarly journals Biochar can Increase Chinese Cabbage (Brassica oleracea L.) Yield, Decrease Nitrogen and Phosphorus Leaching Losses in Intensive Vegetable Soil

Phyton ◽  
2022 ◽  
Vol 91 (1) ◽  
pp. 197-206
Author(s):  
Haijun Sun ◽  
Paramsothy Jeyakumar ◽  
Hongdong Xiao ◽  
Xuewen Li ◽  
Jiayou Liu ◽  
...  
Keyword(s):  
Brassica Oleracea ◽  
Chinese Cabbage ◽  
Phosphorus Leaching ◽  
Nitrogen And Phosphorus ◽  
Leaching Losses ◽  
Vegetable Soil ◽  
Brassica Oleracea L ◽  
Yield Decrease

scholarly journals Response of Vertical Migration and Leaching of Nitrogen in Percolation Water of Paddy Fields under Water-Saving Irrigation and Straw Return Conditions

Water ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 868 ◽  
Author(s):  
Chengxin Zheng ◽  
Zhanyu Zhang ◽  
Yunyu Wu ◽  
Richwell Mwiya
Keyword(s):  
Vertical Migration ◽  
Growth Stage ◽  
Nitrogen Leaching ◽  
Water Saving ◽  
Paddy Fields ◽  
N Leaching ◽  
Leaching Losses ◽  
Leaching Loss ◽  
Straw Return ◽  
Percolation Water

The use of water-saving irrigation techniques has been encouraged in rice fields in response to irrigation water scarcity. Straw return is an important means of straw reuse. However, the environmental impact of this technology, e.g., nitrogen leaching loss, must be further explored. A two-year (2017–2018) experiment was conducted to investigate the vertical migration and leaching of nitrogen in paddy fields under water-saving and straw return conditions. Treatments included traditional flood irrigation (FI) and two water-saving irrigation regimes: rain-catching and controlled irrigation (RC-CI) and drought planting with straw mulching (DP-SM). RC-CI and DP-SM both significantly decreased the irrigation input compared with FI. RC-CI increased the rice yield by 8.23%~12.26%, while DP-SM decreased it by 8.98%~15.24% compared with FI. NH4+-N was the main form of the nitrogen leaching loss in percolation water, occupying 49.06%~50.97% of TN leaching losses. The NH4+-N and TN concentration showed a decreasing trend from top to bottom in soil water of 0~54 cm depth, while the concentration of NO3−-N presented the opposite behavior. The TN and NH4+-N concentrations in percolation water of RC-CI during most of the rice growth stage were the highest among treatments in both years, and DP-SM showed a trend of decreasing TN and NH4+-N concentrations. The NO3−-N concentrations in percolation water showed a regular pattern of DP-SM > RC-CI > FI during most of the rice growth stage. RC-CI and DP-SM remarkably reduced the amount of N leaching losses compared to FI as a result of the significant decrease of percolation water volumes. The tillering and jointing-booting stages were the two critical periods of N leaching (accounted for 74.85%~86.26% of N leaching losses). Great promotion potential of RC-CI and DP-SM exists in the lower reaches of the Yangtze River, China, and DP-SM needs to be further optimized.

Effect of soil degradation on the carbon concentration and retention of nitrogen and phosphorus across Chinese rice paddy fields

CATENA ◽  
2022 ◽  
Vol 209 ◽  
pp. 105810
Author(s):  
Qiang Jin ◽  
Chun Wang ◽  
Jordi Sardans ◽  
Tony Vancov ◽  
Yunying Fang ◽  
...  
Keyword(s):  
Carbon Concentration ◽  
Soil Degradation ◽  
Rice Paddy ◽  
Paddy Fields ◽  
Nitrogen And Phosphorus ◽  
Rice Paddy Fields

Importance of subsurface fluxes of water, nitrogen and phosphorus from rice paddy fields relative to surface runoff

2019 ◽  
Vol 213 ◽  
pp. 627-635 ◽  
Author(s):  
Jin Fu ◽  
Yali Wu ◽  
Qihui Wang ◽  
Kelin Hu ◽  
Shiqin Wang ◽  
...  
Keyword(s):  
Surface Runoff ◽  
Rice Paddy ◽  
Paddy Fields ◽  
Nitrogen And Phosphorus ◽  
Rice Paddy Fields
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